• Magnetic field effect on state energies and transition frequency of a strong-coupling polaron in an anisotropic quantum dot

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    • Keywords

       

      Anisotropic quantum dots; polaron; variational method of the Pekar-type; magnetic field.

    • Abstract

       

      By employing a variational method of the Pekar-type, which has different variational parameters in the $x–y$ plane and the $z$-direction, we study the ground and the first excited state energies and transition frequency between the ground and the first excited states of a strong-coupling polaron in an anisotropic quantum dot (AQD) under an applied magnetic field along the $z$-direction. The effects of the magnetic field and the electron–phonon coupling strength are taken into account. It is found that the ground and the first excited state energies and the transition frequency are increasing functions of the external applied magnetic field. The ground state and the first excited state energies are decreasing functions, whereas transition frequency is an increasing function of the electron–phonon coupling strength. We find two ways of tuning the state energies and the transition frequency: by adjusting (1) the magnetic field and (2) the electron–phonon coupling strength.

    • Author Affiliations

       

      Wei Xiao1 Jing-Lin Xiao2

      1. Department of Basic Sciences, University of Informational Science and Technology of Beijing, Beijing 100101, China
      2. College of Physics and Electronic Information, Inner Mongolia National University, Tongliao 028043, China
    • Dates

       
  • Pramana – Journal of Physics | News

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